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<a href="_abstract_objective_function_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">//===========================================================================</span><span class="comment"></span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment">/*!</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> * </span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> *</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> * \brief       AbstractObjectiveFunction</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> * \file</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> * </span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"> *</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"> * \author      T.Voss, T. Glasmachers, O.Krause</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment"> * \date        2010-2011</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"> *</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment"> *</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment"> * \par Copyright 1995-2017 Shark Development Team</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment"> * </span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment"> * &lt;BR&gt;&lt;HR&gt;</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"> * This file is part of Shark.</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment"> * &lt;https://shark-ml.github.io/Shark/&gt;</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment"> * </span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment"> * Shark is free software: you can redistribute it and/or modify</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="comment"> * it under the terms of the GNU Lesser General Public License as published </span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="comment"> * by the Free Software Foundation, either version 3 of the License, or</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="comment"> * (at your option) any later version.</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="comment"> * </span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="comment"> * Shark is distributed in the hope that it will be useful,</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span><span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="comment"> * GNU Lesser General Public License for more details.</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span><span class="comment"> * </span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span><span class="comment"> * You should have received a copy of the GNU Lesser General Public License</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="comment"> * along with Shark.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="comment"> *</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="comment"> */</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="comment">//===========================================================================</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="preprocessor">#ifndef SHARK_OBJECTIVEFUNCTIONS_ABSTRACTOBJECTIVEFUNCTION_H</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="preprocessor">#define SHARK_OBJECTIVEFUNCTIONS_ABSTRACTOBJECTIVEFUNCTION_H</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span> </div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="preprocessor">#include &lt;<a class="code" href="_i_nameable_8h.html">shark/Core/INameable.h</a>&gt;</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span><span class="preprocessor">#include &lt;<a class="code" href="_exception_8h.html">shark/Core/Exception.h</a>&gt;</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span><span class="preprocessor">#include &lt;<a class="code" href="_flags_8h.html">shark/Core/Flags.h</a>&gt;</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span><span class="preprocessor">#include &lt;<a class="code" href="_base_8h.html">shark/LinAlg/Base.h</a>&gt;</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span><span class="preprocessor">#include &lt;<a class="code" href="_abstract_constraint_handler_8h.html" title="Base class for constraints.">shark/ObjectiveFunctions/AbstractConstraintHandler.h</a>&gt;</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span> </div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceshark.html" title="AbstractMultiObjectiveOptimizer.">shark</a> {</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span>    <span class="comment"></span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span><span class="comment">/// \defgroup objfunctions Objective functions</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span><span class="comment">/// \brief Objective functions for optimization.</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span><span class="comment">///</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span><span class="comment">/// In shark, the learning problem is phrased as an objective function which is then optimized using \ref optimizers . This allows</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span><span class="comment">/// to test and develop algorithms using \ref benchmarks independent of the problem to solve.</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="comment"></span><span class="comment"></span> </div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><span class="comment">/// \brief Super class of all objective functions for optimization and learning.</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span><span class="comment">///</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span><span class="comment">/// \par</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span><span class="comment">/// The AbstractObjectiveFunction template class is the most general</span></div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span><span class="comment">/// interface for a function to be minimized by an</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span><span class="comment">/// optimizer. It subsumes many more specialized classes,</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span><span class="comment">/// ranging from classical test problems in evolutionary algorithms to</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span><span class="comment">/// data-dependent objective functions in supervised learning. This</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span><span class="comment">/// interface allows all general purpose optimization procedures to be</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span><span class="comment">/// used as model training algorithms in a learning task, with</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span><span class="comment">/// applications ranging from training of neural networks to direct</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span><span class="comment">/// policy search in reinforcement learning.</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span><span class="comment">///</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span><span class="comment">/// AbstractObjectiveFunction offers a rich interface to support</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span><span class="comment">/// different types of optimizers. Since not every objective function meets</span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span><span class="comment">/// every requirement, a flag system exists which tells the optimizer</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span><span class="comment">/// which features are available. These are:</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span><span class="comment">/// HAS_VALUE: The function can be evaluated. If not set, evalDerivative returns a meaningless</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span><span class="comment">/// value (for example std::numeric_limits&lt;double&gt;::quiet_nan());</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span><span class="comment">/// HAS_FIRST_DERIVATIVE: evalDerivative can be called for the FirstOrderDerivative.</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span><span class="comment">/// The Derivative is defined and as exact as possible;</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span><span class="comment">/// HAS_SECOND_DERIVATIVE: evalDerivative can be called for the second derivative.</span></div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span><span class="comment">/// IS_CONSTRAINED_FEATURE: The function has constraints and isFeasible might return false;</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span><span class="comment">/// CAN_PROPOSE_STARTING_POINT: the function can return a possibly randomized starting point;</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span><span class="comment">/// CAN_PROVIDE_CLOSEST_FEASIBLE: if the function is constrained, closest feasible can be</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span><span class="comment">/// called to construct a feasible point.</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span><span class="comment">///</span></div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span><span class="comment">/// In the single objective case, the shark convention is to return a double value, while in</span></div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span><span class="comment">/// Multi objective optimization a RealVector is returned with an entry for every objective.</span></div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span><span class="comment">/// Moreoever, derivatives in the single objective case are RealVectors, while they are </span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span><span class="comment">/// RealMatrix in the multi-objective case (i.e. the jacobian of the function).</span></div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span><span class="comment">///</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span><span class="comment">/// Calling the derivatives, proposeStartingPoint or closestFeasible when the flags are not set</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span><span class="comment">/// will throw an exception.</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span><span class="comment">/// The features can be queried using the method features() as in</span></div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span><span class="comment">/// if(!(f.features()&amp;Function::HAS_VALUE))</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span><span class="comment">///</span></div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span><span class="comment">/// \ingroup objfunctions</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span><span class="comment">/// \tparam PointType The search space the function is defined upon.</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span><span class="comment">/// \tparam ResultT The objective space the function is defined upon.</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span><span class="comment"></span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Po<span class="keywordtype">int</span>Type, <span class="keyword">typename</span> ResultT&gt;</div>
<div class="foldopen" id="foldopen00092" data-start="{" data-end="};">
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html">   92</a></span><span class="keyword">class </span><a class="code hl_class" href="classshark_1_1_abstract_objective_function.html" title="Super class of all objective functions for optimization and learning.">AbstractObjectiveFunction</a> :  <span class="keyword">public</span> <a class="code hl_class" href="classshark_1_1_i_nameable.html" title="This class is an interface for all objects which can have a name.">INameable</a>{</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a59bfea031628e16737c66e7117eba7b5">   94</a></span>    <span class="keyword">typedef</span> PointType <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a59bfea031628e16737c66e7117eba7b5">SearchPointType</a>;</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a70f0672a3c3b24c437c81243624b5307">   95</a></span>    <span class="keyword">typedef</span> ResultT <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a70f0672a3c3b24c437c81243624b5307">ResultType</a>;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span> </div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span>    <span class="comment">//if the result type is not an arithmetic type, we assume it is a vector-type-&gt;multi objective optimization</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>    <span class="keyword">typedef</span> <span class="keyword">typename</span> boost::mpl::if_&lt;</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span>        std::is_arithmetic&lt;ResultT&gt;,</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>        <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a59bfea031628e16737c66e7117eba7b5">SearchPointType</a>,</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span>        RealMatrix</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a29804371954a360f09696adea7cfd839">  102</a></span>    &gt;::type <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a29804371954a360f09696adea7cfd839">FirstOrderDerivative</a>;</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span> </div>
<div class="foldopen" id="foldopen00104" data-start="{" data-end="};">
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"><a class="line" href="structshark_1_1_abstract_objective_function_1_1_second_order_derivative.html">  104</a></span>    <span class="keyword">struct </span><a class="code hl_struct" href="structshark_1_1_abstract_objective_function_1_1_second_order_derivative.html">SecondOrderDerivative</a> {</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"><a class="line" href="structshark_1_1_abstract_objective_function_1_1_second_order_derivative.html#a525f2019dbf953b847ad45cf2adf7aa9">  105</a></span>        <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a29804371954a360f09696adea7cfd839">FirstOrderDerivative</a> <a class="code hl_variable" href="structshark_1_1_abstract_objective_function_1_1_second_order_derivative.html#a525f2019dbf953b847ad45cf2adf7aa9">gradient</a>;</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"><a class="line" href="structshark_1_1_abstract_objective_function_1_1_second_order_derivative.html#a2f0998489fda1b495c3310d0aacd2c50">  106</a></span>        RealMatrix <a class="code hl_variable" href="structshark_1_1_abstract_objective_function_1_1_second_order_derivative.html#a2f0998489fda1b495c3310d0aacd2c50">hessian</a>;</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span>    };</div>
</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span><span class="comment"></span> </div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="comment">    /// \brief List of features that are supported by an implementation.</span></div>
<div class="foldopen" id="foldopen00110" data-start="{" data-end="};">
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1a">  110</a></span><span class="comment"></span>    <span class="keyword">enum</span> <a class="code hl_enumeration" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1a" title="List of features that are supported by an implementation.">Feature</a> {</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aad3475b458576c8760f28d8d81f4eda86">  111</a></span>        <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aad3475b458576c8760f28d8d81f4eda86" title="The function can be evaluated and evalDerivative returns a meaningless value (for example std::numeri...">HAS_VALUE</a>                        =  1, <span class="comment">///&lt; The function can be evaluated and evalDerivative returns a meaningless value (for example std::numeric_limits&lt;double&gt;::quiet_nan()).</span></div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa0bc7673a369df5f86ddd6ba6735f4971">  112</a></span>        <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa0bc7673a369df5f86ddd6ba6735f4971" title="The method evalDerivative is implemented for the first derivative and returns a sensible value.">HAS_FIRST_DERIVATIVE</a>             =  2, <span class="comment">///&lt; The method evalDerivative is implemented for the first derivative and returns a sensible value.</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa2a3534a8bfd17ffc9f39a2892dc03858">  113</a></span>        <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa2a3534a8bfd17ffc9f39a2892dc03858" title="The method evalDerivative is implemented for the second derivative and returns a sensible value.">HAS_SECOND_DERIVATIVE</a>            =  4, <span class="comment">///&lt; The method evalDerivative is implemented for the second derivative and returns a sensible value.</span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aab9262b57bb302f04b2561666a9068446">  114</a></span>        <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aab9262b57bb302f04b2561666a9068446" title="The function can propose a sensible starting point to search algorithms.">CAN_PROPOSE_STARTING_POINT</a>       = 8, <span class="comment">///&lt; The function can propose a sensible starting point to search algorithms.</span></div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa0574c1ccb7c3791cc09bae4a7198429a">  115</a></span>        <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa0574c1ccb7c3791cc09bae4a7198429a" title="The objective function is constrained.">IS_CONSTRAINED_FEATURE</a>           =  16, <span class="comment">///&lt; The objective function is constrained.</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa7decd0dc83d8de4fcec02d4e27251dd5">  116</a></span>        <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa7decd0dc83d8de4fcec02d4e27251dd5" title="The constraints are governed by a constraint handler which can be queried by getConstraintHandler()">HAS_CONSTRAINT_HANDLER</a>           =  32, <span class="comment">///&lt; The constraints are governed by a constraint handler which can be queried by getConstraintHandler()</span></div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa15247e91dcbcdf3fa7061f2ee70cf129">  117</a></span>        <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa15247e91dcbcdf3fa7061f2ee70cf129" title="If the function is constrained, the method closestFeasible is implemented and returns a &quot;repaired&quot; so...">CAN_PROVIDE_CLOSEST_FEASIBLE</a>     = 64,  <span class="comment">///&lt; If the function is constrained, the method closestFeasible is implemented and returns a &quot;repaired&quot; solution.</span></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa155aa01439b358ce00e8cfb9f377fb5f">  118</a></span>        <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa155aa01439b358ce00e8cfb9f377fb5f" title="can eval or evalDerivative be called in parallel?">IS_THREAD_SAFE</a>     = 128,   <span class="comment">///&lt; can eval or evalDerivative be called in parallel?</span></div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span>        <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa9022946d8a121d3e6c820f58d8cd3d87" title="The function value is perturbed by some kind of noise.">IS_NOISY</a>     = 256  <span class="comment">///&lt; The function value is perturbed by some kind of noise</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa9022946d8a121d3e6c820f58d8cd3d87">  120</a></span>    };</div>
</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span><span class="comment"></span> </div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span><span class="comment">    /// This statement declares the member m_features. See Core/Flags.h for details.</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a08e03b4eea2e069da19e0870fd205090">  123</a></span><span class="comment"></span>    <a class="code hl_define" href="_flags_8h.html#a3c3e2d17f85cf4a10ea888742a4b95a3">SHARK_FEATURE_INTERFACE</a>;</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span>    <span class="comment"></span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span><span class="comment">    /// \brief returns whether this function can calculate it&#39;s function value</span></div>
<div class="foldopen" id="foldopen00126" data-start="{" data-end="}">
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a7d4be77b4100781bbd7ca50bcf68c94f">  126</a></span><span class="comment"></span>    <span class="keywordtype">bool</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a7d4be77b4100781bbd7ca50bcf68c94f" title="returns whether this function can calculate it&#39;s function value">hasValue</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span>        <span class="keywordflow">return</span> <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> &amp; <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aad3475b458576c8760f28d8d81f4eda86" title="The function can be evaluated and evalDerivative returns a meaningless value (for example std::numeri...">HAS_VALUE</a>;</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span>    }</div>
</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span>    <span class="comment"></span></div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span><span class="comment">    /// \brief returns whether this function can calculate the first derivative</span></div>
<div class="foldopen" id="foldopen00131" data-start="{" data-end="}">
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aec3465e02d80e79445df299cf8531fcc">  131</a></span><span class="comment"></span>    <span class="keywordtype">bool</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#aec3465e02d80e79445df299cf8531fcc" title="returns whether this function can calculate the first derivative">hasFirstDerivative</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span>        <span class="keywordflow">return</span> <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> &amp; <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa0bc7673a369df5f86ddd6ba6735f4971" title="The method evalDerivative is implemented for the first derivative and returns a sensible value.">HAS_FIRST_DERIVATIVE</a>;</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span>    }</div>
</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span>    <span class="comment"></span></div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span><span class="comment">    /// \brief returns whether this function can calculate the second derivative</span></div>
<div class="foldopen" id="foldopen00136" data-start="{" data-end="}">
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a9f5d2c0fa504de1e3b5a66363c826f08">  136</a></span><span class="comment"></span>    <span class="keywordtype">bool</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a9f5d2c0fa504de1e3b5a66363c826f08" title="returns whether this function can calculate the second derivative">hasSecondDerivative</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span>        <span class="keywordflow">return</span> <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> &amp; <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa2a3534a8bfd17ffc9f39a2892dc03858" title="The method evalDerivative is implemented for the second derivative and returns a sensible value.">HAS_SECOND_DERIVATIVE</a>;</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span>    }</div>
</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span>    <span class="comment"></span></div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span><span class="comment">    /// \brief returns whether this function can propose a starting point.</span></div>
<div class="foldopen" id="foldopen00141" data-start="{" data-end="}">
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aa190c3699e653df3f054b0b3d753270e">  141</a></span><span class="comment"></span>    <span class="keywordtype">bool</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#aa190c3699e653df3f054b0b3d753270e" title="returns whether this function can propose a starting point.">canProposeStartingPoint</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span>        <span class="keywordflow">return</span> <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> &amp; <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aab9262b57bb302f04b2561666a9068446" title="The function can propose a sensible starting point to search algorithms.">CAN_PROPOSE_STARTING_POINT</a>;</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span>    }</div>
</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span>    <span class="comment"></span></div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span><span class="comment">    /// \brief returns whether this function can return </span></div>
<div class="foldopen" id="foldopen00146" data-start="{" data-end="}">
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a2a03eac74b7cac35c5d510ab12599393">  146</a></span><span class="comment"></span>    <span class="keywordtype">bool</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a2a03eac74b7cac35c5d510ab12599393" title="returns whether this function can return">isConstrained</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span>        <span class="keywordflow">return</span> <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> &amp; <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa0574c1ccb7c3791cc09bae4a7198429a" title="The objective function is constrained.">IS_CONSTRAINED_FEATURE</a>;</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span>    }</div>
</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span>    <span class="comment"></span></div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span><span class="comment">    /// \brief returns whether this function can return </span></div>
<div class="foldopen" id="foldopen00151" data-start="{" data-end="}">
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a8d14fcc84cd963a1f6d9d7c8477bd3ee">  151</a></span><span class="comment"></span>    <span class="keywordtype">bool</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a8d14fcc84cd963a1f6d9d7c8477bd3ee" title="returns whether this function can return">hasConstraintHandler</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span>        <span class="keywordflow">return</span> <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> &amp; <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa7decd0dc83d8de4fcec02d4e27251dd5" title="The constraints are governed by a constraint handler which can be queried by getConstraintHandler()">HAS_CONSTRAINT_HANDLER</a>;</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span>    }</div>
</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span>    <span class="comment"></span></div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span><span class="comment">    /// \brief Returns whether this function can calculate thee closest feasible to an infeasible point.</span></div>
<div class="foldopen" id="foldopen00156" data-start="{" data-end="}">
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a499c48a9afe9e77e866af66c0cb4f396">  156</a></span><span class="comment"></span>    <span class="keywordtype">bool</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a499c48a9afe9e77e866af66c0cb4f396" title="Returns whether this function can calculate thee closest feasible to an infeasible point.">canProvideClosestFeasible</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span>        <span class="keywordflow">return</span> <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> &amp; <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa15247e91dcbcdf3fa7061f2ee70cf129" title="If the function is constrained, the method closestFeasible is implemented and returns a &quot;repaired&quot; so...">CAN_PROVIDE_CLOSEST_FEASIBLE</a>;</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span>    }</div>
</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span>    <span class="comment"></span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span><span class="comment">    /// \brief Returns true, when the function can be usd in parallel threads.</span></div>
<div class="foldopen" id="foldopen00161" data-start="{" data-end="}">
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a3b418f50d0e284fe10c92a1c719d5615">  161</a></span><span class="comment"></span>    <span class="keywordtype">bool</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a3b418f50d0e284fe10c92a1c719d5615" title="Returns true, when the function can be usd in parallel threads.">isThreadSafe</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span>        <span class="keywordflow">return</span> <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> &amp; <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa155aa01439b358ce00e8cfb9f377fb5f" title="can eval or evalDerivative be called in parallel?">IS_THREAD_SAFE</a>;</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span>    }</div>
</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span>    <span class="comment"></span></div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span><span class="comment">    /// \brief Returns true, when the function can be usd in parallel threads.</span></div>
<div class="foldopen" id="foldopen00166" data-start="{" data-end="}">
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a80a63b56c111cd7c65e5b264c9d84bac">  166</a></span><span class="comment"></span>    <span class="keywordtype">bool</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a80a63b56c111cd7c65e5b264c9d84bac" title="Returns true, when the function can be usd in parallel threads.">isNoisy</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span>        <span class="keywordflow">return</span> <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> &amp; <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa9022946d8a121d3e6c820f58d8cd3d87" title="The function value is perturbed by some kind of noise.">IS_NOISY</a>;</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span>    }</div>
</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span><span class="comment"></span> </div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span><span class="comment">    /// \brief Default ctor.</span></div>
<div class="foldopen" id="foldopen00171" data-start="{" data-end="}">
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a0f32ae97885db58f9602191d64284f98">  171</a></span><span class="comment"></span>    <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a0f32ae97885db58f9602191d64284f98" title="Default ctor.">AbstractObjectiveFunction</a>():<a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#af0942c072be06d0dd4da5ee7067c5777" title="Evaluation counter, default value: 0.">m_evaluationCounter</a>(0), <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#a6a27bddca6060f7861c49b05f8ec8435">mep_rng</a>(&amp;random::globalRng){</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span>        <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> |=<a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aad3475b458576c8760f28d8d81f4eda86" title="The function can be evaluated and evalDerivative returns a meaningless value (for example std::numeri...">HAS_VALUE</a>;</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span>    }<span class="comment"></span></div>
</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span><span class="comment">    /// \brief Virtual destructor</span></div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a11cbdfb46ff9d34231248d8b847bd0ea">  175</a></span><span class="comment"></span>    <span class="keyword">virtual</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a11cbdfb46ff9d34231248d8b847bd0ea" title="Virtual destructor.">~AbstractObjectiveFunction</a>() {}</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span> </div>
<div class="foldopen" id="foldopen00177" data-start="{" data-end="}">
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#abe4776a85c4ce622c25f3290fa1395d1">  177</a></span>    <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#abe4776a85c4ce622c25f3290fa1395d1">init</a>() {</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span>        <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#af0942c072be06d0dd4da5ee7067c5777" title="Evaluation counter, default value: 0.">m_evaluationCounter</a>=0;</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span>    }</div>
</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span>    <span class="comment"></span></div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span><span class="comment">    ///\brief Sets the Rng used by the objective function.</span></div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span><span class="comment">    ///</span></div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span><span class="comment">    /// Objective functions need random numbers for different tasks,</span></div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span><span class="comment">    /// e.g. to provide a first starting point or for example</span></div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span><span class="comment">    /// mini batch learning where batches are chosen randomly. </span></div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span><span class="comment">    /// By default, shark::random::globalRng is used.</span></div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span><span class="comment">    /// In a multi-threaded environment this might not be safe as </span></div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span><span class="comment">    /// the Rng is not thread safe. In this case, every thread should use its</span></div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span><span class="comment">    /// own Rng.</span></div>
<div class="foldopen" id="foldopen00190" data-start="{" data-end="}">
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a3a287178b5b0b97c71bbffc80086ff00">  190</a></span><span class="comment"></span>    <span class="keywordtype">void</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a3a287178b5b0b97c71bbffc80086ff00" title="Sets the Rng used by the objective function.">setRng</a>(random::rng_type* rng){</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span>        <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#a6a27bddca6060f7861c49b05f8ec8435">mep_rng</a> = rng;</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span>    }</div>
</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span>    <span class="comment"></span></div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span><span class="comment">    /// \brief Accesses the number of variables</span></div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a256f6b128af038dfaf9cef1bcd45a426">  195</a></span><span class="comment"></span>    <span class="keyword">virtual</span> std::size_t <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a256f6b128af038dfaf9cef1bcd45a426" title="Accesses the number of variables.">numberOfVariables</a>() <span class="keyword">const</span>=0;</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span>        </div>
<div class="foldopen" id="foldopen00197" data-start="{" data-end="}">
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a24751b2fc6f327053938dc92ff01384a">  197</a></span>    <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a24751b2fc6f327053938dc92ff01384a">hasScalableDimensionality</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span>        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span>    }</div>
</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span><span class="comment"></span> </div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span><span class="comment">    /// \brief Adjusts the number of variables if the function is scalable.</span></div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span><span class="comment">    /// \param [in] numberOfVariables The new dimension.</span></div>
<div class="foldopen" id="foldopen00203" data-start="{" data-end="}">
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a4bdfc60abbe8548ba090bff096295b8f">  203</a></span><span class="comment"></span>    <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a4bdfc60abbe8548ba090bff096295b8f" title="Adjusts the number of variables if the function is scalable.">setNumberOfVariables</a>( std::size_t <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a256f6b128af038dfaf9cef1bcd45a426" title="Accesses the number of variables.">numberOfVariables</a> ){</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span>        <span class="keywordflow">throw</span> <a class="code hl_define" href="_exception_8h.html#a4e03d7dfdfe8cbc90447fa829fc09e4f">SHARKEXCEPTION</a>(<span class="stringliteral">&quot;dimensionality of function is not scalable&quot;</span>);</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span>    }</div>
</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span>        </div>
<div class="foldopen" id="foldopen00207" data-start="{" data-end="}">
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aa69ec2b8a4e968f30d7ac135af074012">  207</a></span>    <span class="keyword">virtual</span> std::size_t <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#aa69ec2b8a4e968f30d7ac135af074012">numberOfObjectives</a>()<span class="keyword"> const</span>{</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span>        <span class="keywordflow">return</span> 1;</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span>    }</div>
</div>
<div class="foldopen" id="foldopen00210" data-start="{" data-end="}">
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#ae58a543d7cccc6c66e3a7d8ce762fc01">  210</a></span>    <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#ae58a543d7cccc6c66e3a7d8ce762fc01">hasScalableObjectives</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span>        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span>    }</div>
</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span><span class="comment"></span> </div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span><span class="comment">    /// \brief Adjusts the number of objectives if the function is scalable.</span></div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span><span class="comment">    /// \param numberOfObjectives The new number of objectives to optimize for.</span></div>
<div class="foldopen" id="foldopen00216" data-start="{" data-end="}">
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#afcb3e45b19bba4130989d7ae37200900">  216</a></span><span class="comment"></span>    <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#afcb3e45b19bba4130989d7ae37200900" title="Adjusts the number of objectives if the function is scalable.">setNumberOfObjectives</a>( std::size_t <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#aa69ec2b8a4e968f30d7ac135af074012">numberOfObjectives</a> ){</div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span>        <span class="keywordflow">throw</span> <a class="code hl_define" href="_exception_8h.html#a4e03d7dfdfe8cbc90447fa829fc09e4f">SHARKEXCEPTION</a>(<span class="stringliteral">&quot;dimensionality of function is not scaleable&quot;</span>);</div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span>    }</div>
</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span>    </div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span>        <span class="comment"></span></div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span><span class="comment">    /// \brief Accesses the evaluation counter of the function.</span></div>
<div class="foldopen" id="foldopen00222" data-start="{" data-end="}">
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#afaa9cc39ccb4d74a0d6db0ae2d087051">  222</a></span><span class="comment"></span>    std::size_t <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#afaa9cc39ccb4d74a0d6db0ae2d087051" title="Accesses the evaluation counter of the function.">evaluationCounter</a>()<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span>        <span class="keywordflow">return</span> <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#af0942c072be06d0dd4da5ee7067c5777" title="Evaluation counter, default value: 0.">m_evaluationCounter</a>;</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span>    }</div>
</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span>    <span class="comment"></span></div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span><span class="comment">    /// \brief Returns the constraint handler of the function if it has one.</span></div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span><span class="comment">    ///</span></div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span><span class="comment">    /// If the function does not offer a constraint handler, an exception is thrown.</span></div>
<div class="foldopen" id="foldopen00229" data-start="{" data-end="}">
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a714edd6cc680adf04d5d12d7e845544f">  229</a></span><span class="comment"></span>    <a class="code hl_class" href="classshark_1_1_abstract_constraint_handler.html" title="Implements the base class for constraint handling.">AbstractConstraintHandler&lt;SearchPointType&gt;</a> <span class="keyword">const</span>&amp; <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a714edd6cc680adf04d5d12d7e845544f" title="Returns the constraint handler of the function if it has one.">getConstraintHandler</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span>        <a class="code hl_define" href="_exception_8h.html#adce1f80097c69010f5eab2618fa2e971">SHARK_RUNTIME_CHECK</a>(<a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#abcb65bca56cbfead4a3956e81d0d97d8">m_constraintHandler</a>, <span class="stringliteral">&quot;Objective Function does not have an constraint handler!&quot;</span>);</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span>        <span class="keywordflow">return</span> *<a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#abcb65bca56cbfead4a3956e81d0d97d8">m_constraintHandler</a>;</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span>    }</div>
</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span><span class="comment"></span> </div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span><span class="comment">    /// \brief Tests whether a point in SearchSpace is feasible, e.g., whether the constraints are fulfilled.</span></div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span><span class="comment">    /// \param [in] input The point to be tested for feasibility.</span></div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span><span class="comment">    /// \return true if the point is feasible, false otherwise.</span></div>
<div class="foldopen" id="foldopen00237" data-start="{" data-end="}">
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a152c45a40169bf31cead2b9169a5367c">  237</a></span><span class="comment"></span>    <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a152c45a40169bf31cead2b9169a5367c" title="Tests whether a point in SearchSpace is feasible, e.g., whether the constraints are fulfilled.">isFeasible</a>( <span class="keyword">const</span> <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a59bfea031628e16737c66e7117eba7b5">SearchPointType</a> &amp; input)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span>        <span class="keywordflow">if</span>(<a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a8d14fcc84cd963a1f6d9d7c8477bd3ee" title="returns whether this function can return">hasConstraintHandler</a>()) <span class="keywordflow">return</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a714edd6cc680adf04d5d12d7e845544f" title="Returns the constraint handler of the function if it has one.">getConstraintHandler</a>().isFeasible(input);</div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span>        <a class="code hl_define" href="_exception_8h.html#adce1f80097c69010f5eab2618fa2e971">SHARK_RUNTIME_CHECK</a>(!<a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a2a03eac74b7cac35c5d510ab12599393" title="returns whether this function can return">isConstrained</a>(), <span class="stringliteral">&quot;Not overwritten, even though function is constrained&quot;</span>);</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span>        <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span>    }</div>
</div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span><span class="comment"></span> </div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span><span class="comment">    /// \brief If supported, the supplied point is repaired such that it satisfies all of the function&#39;s constraints.</span></div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span><span class="comment">    /// </span></div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span><span class="comment">    /// \param [in,out] input The point to be repaired.</span></div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span><span class="comment">    /// </span></div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span><span class="comment">    /// \throws FeatureNotAvailableException in the default implementation.</span></div>
<div class="foldopen" id="foldopen00248" data-start="{" data-end="}">
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a68b3dfe1642e13693b5ab610f3fc5f79">  248</a></span><span class="comment"></span>    <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a68b3dfe1642e13693b5ab610f3fc5f79" title="If supported, the supplied point is repaired such that it satisfies all of the function&#39;s constraints...">closestFeasible</a>( <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a59bfea031628e16737c66e7117eba7b5">SearchPointType</a> &amp; input )<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span>        <span class="keywordflow">if</span>(!<a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a2a03eac74b7cac35c5d510ab12599393" title="returns whether this function can return">isConstrained</a>()) <span class="keywordflow">return</span>;</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span>        <span class="keywordflow">if</span>(<a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a8d14fcc84cd963a1f6d9d7c8477bd3ee" title="returns whether this function can return">hasConstraintHandler</a>()) <span class="keywordflow">return</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a714edd6cc680adf04d5d12d7e845544f" title="Returns the constraint handler of the function if it has one.">getConstraintHandler</a>().closestFeasible(input);</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span>        <a class="code hl_define" href="_flags_8h.html#a6e41326253dee198183b5cbde3570c6c">SHARK_FEATURE_EXCEPTION</a>(<a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa15247e91dcbcdf3fa7061f2ee70cf129" title="If the function is constrained, the method closestFeasible is implemented and returns a &quot;repaired&quot; so...">CAN_PROVIDE_CLOSEST_FEASIBLE</a>);</div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno">  252</span>    }</div>
</div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span><span class="comment"></span> </div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno">  254</span><span class="comment">    ///  \brief Proposes a starting point in the feasible search space of the function.</span></div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span><span class="comment">    /// </span></div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span><span class="comment">    ///  \return The generated starting point.</span></div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span><span class="comment">    ///  \throws FeatureNotAvailableException in the default implementation</span></div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span><span class="comment">    ///  and if a function does not support this feature.</span></div>
<div class="foldopen" id="foldopen00259" data-start="{" data-end="}">
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#acd2922036a6388fde1173490079bb22b">  259</a></span><span class="comment"></span>    <span class="keyword">virtual</span> <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a59bfea031628e16737c66e7117eba7b5">SearchPointType</a> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#acd2922036a6388fde1173490079bb22b" title="Proposes a starting point in the feasible search space of the function.">proposeStartingPoint</a>()<span class="keyword">const </span>{</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span>        <span class="keywordflow">if</span>(<a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a8d14fcc84cd963a1f6d9d7c8477bd3ee" title="returns whether this function can return">hasConstraintHandler</a>()&amp;&amp; <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a714edd6cc680adf04d5d12d7e845544f" title="Returns the constraint handler of the function if it has one.">getConstraintHandler</a>().canGenerateRandomPoint()){</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span>            <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a59bfea031628e16737c66e7117eba7b5">SearchPointType</a> startingPoint;</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno">  262</span>            <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a714edd6cc680adf04d5d12d7e845544f" title="Returns the constraint handler of the function if it has one.">getConstraintHandler</a>().generateRandomPoint(*<a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#a6a27bddca6060f7861c49b05f8ec8435">mep_rng</a>, startingPoint);</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span>            <span class="keywordflow">return</span> startingPoint;</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span>        }</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span>        <span class="keywordflow">else</span>{</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno">  266</span>            <a class="code hl_define" href="_flags_8h.html#a6e41326253dee198183b5cbde3570c6c">SHARK_FEATURE_EXCEPTION</a>(<a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aab9262b57bb302f04b2561666a9068446" title="The function can propose a sensible starting point to search algorithms.">CAN_PROPOSE_STARTING_POINT</a>);</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span>        }</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span>    }</div>
</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span><span class="comment"></span> </div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span><span class="comment">    ///  \brief Evaluates the objective function for the supplied argument.</span></div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span><span class="comment">    ///  \param [in] input The argument for which the function shall be evaluated.</span></div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span><span class="comment">    ///  \return The result of evaluating the function for the supplied argument.</span></div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span><span class="comment">    ///  \throws FeatureNotAvailableException in the default implementation</span></div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span><span class="comment">    ///  and if a function does not support this feature.</span></div>
<div class="foldopen" id="foldopen00275" data-start="{" data-end="}">
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a751c175270f6d6f0bcc1200f333c0045">  275</a></span><span class="comment"></span>    <span class="keyword">virtual</span> <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a70f0672a3c3b24c437c81243624b5307">ResultType</a> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a751c175270f6d6f0bcc1200f333c0045" title="Evaluates the objective function for the supplied argument.">eval</a>( <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a59bfea031628e16737c66e7117eba7b5">SearchPointType</a> <span class="keyword">const</span>&amp; input )<span class="keyword">const </span>{</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span>        <a class="code hl_define" href="_flags_8h.html#a6e41326253dee198183b5cbde3570c6c">SHARK_FEATURE_EXCEPTION</a>(<a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aad3475b458576c8760f28d8d81f4eda86" title="The function can be evaluated and evalDerivative returns a meaningless value (for example std::numeri...">HAS_VALUE</a>);</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span>    }</div>
</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span><span class="comment"></span> </div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span><span class="comment">    /// \brief Evaluates the function. Useful together with STL-Algorithms like std::transform.</span></div>
<div class="foldopen" id="foldopen00280" data-start="{" data-end="}">
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#aa79994e4b70d92fd30e62be20145ebd9">  280</a></span><span class="comment"></span>    <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a70f0672a3c3b24c437c81243624b5307">ResultType</a> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#aa79994e4b70d92fd30e62be20145ebd9" title="Evaluates the function. Useful together with STL-Algorithms like std::transform.">operator()</a>( <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a59bfea031628e16737c66e7117eba7b5">SearchPointType</a> <span class="keyword">const</span>&amp; input )<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span>        <span class="keywordflow">return</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a751c175270f6d6f0bcc1200f333c0045" title="Evaluates the objective function for the supplied argument.">eval</a>(input);</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span>    }</div>
</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span><span class="comment"></span> </div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span><span class="comment">    /// \brief Evaluates the objective function and calculates its gradient.</span></div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span><span class="comment">    /// \param [in] input The argument to eval the function for.</span></div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span><span class="comment">    /// \param [out] derivative The derivate is placed here.</span></div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span><span class="comment">    /// \return The result of evaluating the function for the supplied argument.</span></div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span><span class="comment">    /// \throws FeatureNotAvailableException in the default implementation</span></div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno">  289</span><span class="comment">    /// and if a function does not support this feature.</span></div>
<div class="foldopen" id="foldopen00290" data-start="{" data-end="}">
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a53df2ac5d82c608ea938dc1e3a0c0617">  290</a></span><span class="comment"></span>    <span class="keyword">virtual</span> <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a70f0672a3c3b24c437c81243624b5307">ResultType</a> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a53df2ac5d82c608ea938dc1e3a0c0617" title="Evaluates the objective function and calculates its gradient.">evalDerivative</a>( <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a59bfea031628e16737c66e7117eba7b5">SearchPointType</a> <span class="keyword">const</span>&amp; input, <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a29804371954a360f09696adea7cfd839">FirstOrderDerivative</a> &amp; derivative )<span class="keyword">const </span>{</div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno">  291</span>        <a class="code hl_define" href="_flags_8h.html#a6e41326253dee198183b5cbde3570c6c">SHARK_FEATURE_EXCEPTION</a>(<a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa0bc7673a369df5f86ddd6ba6735f4971" title="The method evalDerivative is implemented for the first derivative and returns a sensible value.">HAS_FIRST_DERIVATIVE</a>);</div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno">  292</span>    }</div>
</div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno">  293</span><span class="comment"></span> </div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span><span class="comment">    /// \brief Evaluates the objective function and calculates its gradient.</span></div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span><span class="comment">    /// \param [in] input The argument to eval the function for.</span></div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span><span class="comment">    /// \param [out] derivative The derivate and the Hessian are placed here.</span></div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span><span class="comment">    /// \return The result of evaluating the function for the supplied argument.</span></div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span><span class="comment">    /// \throws FeatureNotAvailableException in the default implementation</span></div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span><span class="comment">    /// and if a function does not support this feature.</span></div>
<div class="foldopen" id="foldopen00300" data-start="{" data-end="}">
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a23274e2befc7530c8d63834e21a3fa78">  300</a></span><span class="comment"></span>    <span class="keyword">virtual</span> <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a70f0672a3c3b24c437c81243624b5307">ResultType</a> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a23274e2befc7530c8d63834e21a3fa78" title="Evaluates the objective function and calculates its gradient.">evalDerivative</a>( <a class="code hl_typedef" href="classshark_1_1_abstract_objective_function.html#a59bfea031628e16737c66e7117eba7b5">SearchPointType</a> <span class="keyword">const</span>&amp; input, <a class="code hl_struct" href="structshark_1_1_abstract_objective_function_1_1_second_order_derivative.html">SecondOrderDerivative</a> &amp; derivative )<span class="keyword">const </span>{</div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span>        <a class="code hl_define" href="_flags_8h.html#a6e41326253dee198183b5cbde3570c6c">SHARK_FEATURE_EXCEPTION</a>(<a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa2a3534a8bfd17ffc9f39a2892dc03858" title="The method evalDerivative is implemented for the second derivative and returns a sensible value.">HAS_SECOND_DERIVATIVE</a>);</div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno">  302</span>    }</div>
</div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno">  303</span> </div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span><span class="keyword">protected</span>:</div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#af0942c072be06d0dd4da5ee7067c5777">  305</a></span>    <span class="keyword">mutable</span> std::size_t <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#af0942c072be06d0dd4da5ee7067c5777" title="Evaluation counter, default value: 0.">m_evaluationCounter</a>; <span class="comment">///&lt; Evaluation counter, default value: 0.</span></div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#abcb65bca56cbfead4a3956e81d0d97d8">  306</a></span>    <a class="code hl_class" href="classshark_1_1_abstract_constraint_handler.html" title="Implements the base class for constraint handling.">AbstractConstraintHandler&lt;SearchPointType&gt;</a> <span class="keyword">const</span>* <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#abcb65bca56cbfead4a3956e81d0d97d8">m_constraintHandler</a>;</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a6a27bddca6060f7861c49b05f8ec8435">  307</a></span>    random::rng_type* <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#a6a27bddca6060f7861c49b05f8ec8435">mep_rng</a>;</div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  308</span>    <span class="comment"></span></div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span><span class="comment">    /// \brief helper function which is called to announce the presence of an constraint handler.</span></div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span><span class="comment">    ///</span></div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno">  311</span><span class="comment">    /// This function quries the propabilities of the handler and sts up the flags accordingly</span></div>
<div class="foldopen" id="foldopen00312" data-start="{" data-end="}">
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"><a class="line" href="classshark_1_1_abstract_objective_function.html#a2b1a8af419059a542cb3d0848dd278a2">  312</a></span><span class="comment"></span>    <span class="keywordtype">void</span> <a class="code hl_function" href="classshark_1_1_abstract_objective_function.html#a2b1a8af419059a542cb3d0848dd278a2" title="helper function which is called to announce the presence of an constraint handler.">announceConstraintHandler</a>(<a class="code hl_class" href="classshark_1_1_abstract_constraint_handler.html" title="Implements the base class for constraint handling.">AbstractConstraintHandler&lt;SearchPointType&gt;</a> <span class="keyword">const</span>* handler){</div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno">  313</span>        <a class="code hl_define" href="_exception_8h.html#adce1f80097c69010f5eab2618fa2e971">SHARK_RUNTIME_CHECK</a>(handler, <span class="stringliteral">&quot;[AbstractObjectiveFunction::AnnounceConstraintHandler] Handler is not allowed to be NULL&quot;</span>);</div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno">  314</span>        <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#abcb65bca56cbfead4a3956e81d0d97d8">m_constraintHandler</a> = handler;</div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno">  315</span>        <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> |= <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa0574c1ccb7c3791cc09bae4a7198429a" title="The objective function is constrained.">IS_CONSTRAINED_FEATURE</a>;</div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno">  316</span>        <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> |= <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa7decd0dc83d8de4fcec02d4e27251dd5" title="The constraints are governed by a constraint handler which can be queried by getConstraintHandler()">HAS_CONSTRAINT_HANDLER</a>;</div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno">  317</span>        <span class="keywordflow">if</span>(handler-&gt;<a class="code hl_function" href="classshark_1_1_abstract_constraint_handler.html#a454524f3253a60a2564a21045fbdc5e9" title="Returns whether this function is an instance of BoxConstraintHandler.">canGenerateRandomPoint</a>())</div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno">  318</span>            <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> |=<a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aab9262b57bb302f04b2561666a9068446" title="The function can propose a sensible starting point to search algorithms.">CAN_PROPOSE_STARTING_POINT</a>;</div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno">  319</span>        <span class="keywordflow">if</span>(handler-&gt;<a class="code hl_function" href="classshark_1_1_abstract_constraint_handler.html#a05adea67dd581616abf51b9f51d425c9" title="Returns whether this function can calculate the closest feasible to an infeasible point.">canProvideClosestFeasible</a>())</div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno">  320</span>            <a class="code hl_variable" href="classshark_1_1_abstract_objective_function.html#ad8888c58fd3f98e73013afb5dd4b2af1">m_features</a> |= <a class="code hl_enumvalue" href="classshark_1_1_abstract_objective_function.html#aadafeb6dfb5b649f321e7b81ac8aad1aa15247e91dcbcdf3fa7061f2ee70cf129" title="If the function is constrained, the method closestFeasible is implemented and returns a &quot;repaired&quot; so...">CAN_PROVIDE_CLOSEST_FEASIBLE</a>;</div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno">  321</span>    }</div>
</div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno">  322</span>};</div>
</div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno">  323</span> </div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno"><a class="line" href="namespaceshark.html#ac9bc8d3d1ae0af07b6957a638ce5f01b">  324</a></span><span class="keyword">typedef</span> <a class="code hl_class" href="classshark_1_1_abstract_objective_function.html">AbstractObjectiveFunction&lt; RealVector, double &gt;</a> <a class="code hl_typedef" href="namespaceshark.html#ac9bc8d3d1ae0af07b6957a638ce5f01b">SingleObjectiveFunction</a>;</div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno"><a class="line" href="namespaceshark.html#a479ba1cc78a4860f185536fe6f281cab">  325</a></span><span class="keyword">typedef</span> <a class="code hl_class" href="classshark_1_1_abstract_objective_function.html" title="Super class of all objective functions for optimization and learning.">AbstractObjectiveFunction&lt; RealVector, RealVector &gt;</a> <a class="code hl_typedef" href="namespaceshark.html#a479ba1cc78a4860f185536fe6f281cab">MultiObjectiveFunction</a>;</div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno">  326</span> </div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno">  327</span>}</div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno">  328</span> </div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno">  329</span><span class="preprocessor">#endif</span></div>
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